140161240 has 16 divisors (see below), whose sum is σ = 315362880. Its totient is φ = 56064480.

The previous prime is 140161237. The next prime is 140161249. The reversal of 140161240 is 42161041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140161249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751976 + ... + 1752055.

It is an arithmetic number, because the mean of its divisors is an integer number (19710180).

Almost surely, 2^140161240 is an apocalyptic number.

140161240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140161240 is an abundant number, since it is smaller than the sum of its proper divisors (175201640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140161240 is a wasteful number, since it uses less digits than its factorization.

140161240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504042 (or 3504038 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 140161240 is about 11838.9712390900. The cubic root of 140161240 is about 519.4486760268.

The spelling of 140161240 in words is "one hundred forty million, one hundred sixty-one thousand, two hundred forty".